PS:
On May 21, 10:05 am, Simon King wrote:
[snip]
> So, naively, my first guess was that the Gamma function is known as
> Gamma to Sage.
The latex name is in fact upper case:
sage: latex(gamma(x))
\Gamma\left(x\right)
> So, if you want to work with "psi", whatever this is, then define it!
Hi!
On May 21, 2:56 am, Alasdair wrote:
> sage: diff(gamma(x))
> gamma(x)*psi(x)
> sage: psi(1)
>
> NameError: name 'psi' is not defined
>
> Now is that cheeky or what - Sage giving an answer with a function
> which is "not defined"!
Probably I am painting a bike shed here, and some people may
